Dear R-experts, Here below my reproducible R code. I want to add many straight lines to a plot using "abline" The last fit (fast Tau-estimator, color yellow) will not appear on the plot. What is going wrong ? Many thanks for your reply.
########## Y=c(2,4,5,4,3,4,2,3,56,5,4,3,4,5,6,5,4,5,34,21,12,13,12,8,9,7,43,12,19,21) Z=c(43,2,1,2,34,4,3,4,5,30,4,5,4,3,4,5,56,6,43,21,34,19,12,11,9,34,21,23,2,19) reg1<-lm(Z ~ Y) plot(Y,Z) abline(reg1, col="black") install.packages("robustbase") library (robustbase) reg=lmrob(Z ~ Y, data = Dataset) abline(reg, col="green") install.packages("MASS") library(MASS) Huber=rlm(Z ~ Y, data = Dataset) abline(Huber,col="red") Tukey=rlm(Z ~ Y, data = Dataset,psi=psi.bisquare) abline(Tukey,col="purple") install.packages("quantreg") library(quantreg) L1=rq(Z ~ Y, data = Dataset,tau=0.5) abline(L1,col="blue") install.packages("RobPer") library(RobPer) FastTau(Z,Y) fast=FastTau(Z,Y) abline(fast, col="yellow") ########## ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.